GL646USB datasheet(31/44 Pages) GENESYS

31 / 44 page

GL646USB

Rev. 1.4

-30-

7.29. Reg : 25H,26H,27 H

(Write)

Buffer full position

Reg21

Reg22

Reg23

Reg24

time

speed

Defalut : 00H,00H,00H

LINCNT[17:0]: to set the scan lines number.

7.30. Reg : 28H,29H

(Write)

Defalut : 01H,FFH

LAMPPWM[8:0] : to set PWM duty for lamp power control.

1/512 duty.

2/512 duty.

…..

511:512/512 duty.

7.31. Reg : 2AH,2BH

(Write)

Default : 00H.00H

RAMA[14:0] : to set DRAM start address to access data.

note: IRAM_A[18:0]={RAMA[14:0],4’b0000}.

7.32. Reg : 2CH,2DH

(Write)

Default : 00H,00H

DPISET[10:0] : set resolution of DPI for average type or deletion type.

A. average type : digital average function support 1/2,1/3,1/4,1/5,1/6,1/8,1/10,1/12,1/15

2400 dpi scanner : can set 1200,800,600,480,400,300,240,200,160 dpi.

1200 dpi scanner : can set 600,400,300,240,200,150,120,100 and 80 dpi.

600 dpi scanner : can set 300,200,150,120,100,75,60,50 and 40 dpi.

B. deletion type : 2400,1200 or 600dpi to 1 dpi setting decrement by one dpi.

7.33. Reg : 2EH

(Write)

Default : 00H

BWHI[7:0]

: to set Black & White threshold high level.

7.34. Reg : 2FH

(Write)

Default : 00H

BWLOW[7:0]

: to set Black & White threshold low level.

GL646USB 数据表(PDF) 31 Page - GENESYS LOGIC

GL646USB 数据表(HTML) 31 Page - GENESYS LOGIC

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GL646USB 数据表(PDF) 31 Page - GENESYS LOGIC

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